Verify migration progress and final source cleanup on every online drive, allowing disk-not-found failures within the configured read quorum. Preserve strict rejection of online metadata remnants, corruption and directory errors. Cover parent and child migration with an offline drive and reject outages beyond parity.
Signed-off-by: Feng Ruohang <rh@vonng.com>
Count removal only after every source drive confirms version absence, including free records and concurrently deleted parents. Retire successful candidates independently with the existing source, destination and tier ownership checks. Reject ambiguous raw reads, verify remaining metadata directly, and propagate cancellation.
Signed-off-by: Feng Ruohang <rh@vonng.com>
(cherry picked from commit b1a97c7e6cc7ab5f44110b5b8258afb60a50053e)
Feng Ruohang